Sheila Gujrathi - 23 Oct 2026 Form 4 Insider Report for Bolt Biotherapeutics, Inc. (BOLT)

Reporting relationship: Chief Strategy Officer, Director
Issuer ticker: BOLT
Reported as of: 23 Oct 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 27 Oct 2026, 17:21:14 UTC
Prior SEC filing: 06 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Sheila Gujrathi

Filing notes and source

Key filing fact

Sheila Gujrathi filed Form 4 for Bolt Biotherapeutics, Inc. (BOLT) on 27 Oct 2026.

Key facts

This page summarizes Sheila Gujrathi's Form 4 filing for Bolt Biotherapeutics, Inc. (BOLT).
4 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 27 Oct 2026, 17:21.

Change

Previous filing in this sequence was filed on 06 Aug 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001575202 Primary reporting owner

GUJRATHI SHEILA

Relationship: Chief Strategy Officer, Director
Address: 900 CHESAPEAKE DRIVE, REDWOOD CITY
Signature: /s/ Sheila Gujrathi
Signature date: 27 Oct 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

BOLT transaction

Common Stock

Award

Transaction value
Shares: +72,766
Change %
Price: $0.000000^*
Shares after: 72,766
Date: 23 Oct 2026
Ownership: Direct
Footnotes: F1, F2

BOLT transaction

Common Stock

Award

Transaction value
Shares: +13,055
Change %
Price: $0.000000^*
Shares after: 13,055
Date: 23 Oct 2026
Ownership: By SilverArc Private Fund I, L.P.
Footnotes: F1, F2, F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

BOLT transaction Derivative

Series D Preferred Stock

Other

Transaction value
Shares: +2,764
Change %
Price
Shares after: 2,764
Date: 23 Oct 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,763,833
Exercise price
Footnotes: F1, F2, F4

BOLT transaction Derivative

Series D Preferred Stock

Other

Transaction value
Shares: +496
Change %
Price
Shares after: 496
Date: 23 Oct 2026
Ownership: By SilverArc Private Fund I, L.P.
Underlying class: Common Stock
Underlying amount: 495,874
Exercise price
Footnotes: F1, F2, F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Received in exchange for shares of common stock of Prana Therapies, Inc. ("Prana") pursuant to the Agreement and Plan of Merger dated October 23, 2026 (the "Merger Agreement") by and among the Issuer, Prana, Prince Merger Sub I, Inc., a Delaware corporation and a wholly owned subsidiary of the Issuer ("Merger Sub I"), Prince Merger Sub II, LLC, a Delaware limited liability company and wholly owned subsidiary of the Issuer ("Merger Sub II"). Each outstanding share of Prana common stock was converted into the right to receive 1.6413 shares of the Issuer's common stock or common-stock equivalents, consisting of Issuer's common stock and Series D Convertible Preferred Stock ("Series D Preferred") convertible at a rate of 1,000 shares of Issuer's common stock per share of Series D Preferred. No cash purchase price was paid for the Series D Preferred received as merger consideration.

Footnote F2

Upon closing of the merger on October 23, 2026, Prana shares held directly by the Reporting Person converted into 72,766 shares of Issuer's common stock and 2,763.833 shares of Series D Preferred. Prana shares held by SilverArc Private Fund I, L.P. converted into 13,055 shares of Issuer's common stock and 495.874 shares of Series D Preferred. The 495.874 shares of Series D Preferred constitute merger consideration

Footnote F3

The Reporting Person is Co-Portfolio Manager and has membership interest in SilverArc Private Capital I, LLC (Ultimate General Partner), SilverArc Private Capital I, LP (General Partner), and SilverArc Private Capital Management I, LP (Management Company) for SilverArc Private Fund I, L.P. The Reporting Person may not be deemed to have voting or investment power over the shares held of record by SilverArc Private Fund I, LP. The Reporting Person disclaims beneficial ownership of the Non-Derivative and Derivative securities held of record by SilverArc Private Fund I, L.P., except to the extent of any pecuniary interest therein.

Footnote F4

Each share of Series D Preferred is convertible into 1,000 shares of the Issuer's common stock, subject to the conditions set forth in the Certificate of Designation, including receipt of the requisite stockholder approval. The Series D Preferred has no expiration date.